Cancer Support

Going to Work With Cancer

Silvia Nankind Mom with Laptop

What you need to know about your rights, your options, and making it through treatment without losing your job

Most people diagnosed with cancer are still employed. Treatment doesn’t automatically mean stopping work, and for many people, the question isn’t whether to keep working but how. Going to work with cancer is its own particular challenge. You’re managing a serious illness, navigating a healthcare system, and trying to hold together a professional identity all at once. This guide covers the practical, legal, and personal dimensions of doing exactly that.

If you’re a parent, there’s an extra layer. The home and childcare load doesn’t pause for cancer treatment, and that pressure can make everything harder. Nankind supports parents with cancer by providing free in-home childcare through trained Volunteer Angels, free Homework Angels and free meal support so the weight at home doesn’t automatically transfer into the weight at work.

Do You Have to Tell Your Employer You Have Cancer?

The short answer is no. In Canada, you are not legally required to disclose a cancer diagnosis to your employer. Under the Ontario Human Rights Code and the Canadian Human Rights Act, employers cannot discriminate against you based on disability, and cancer qualifies as a disability under human rights law.

Your legal rights in Canada

You only need to disclose if you are requesting accommodation. If you want your employer to adjust your hours, allow remote work, or approve medical leave, you’ll need to say enough to support that request. You don’t have to name your diagnosis. “I have a medical condition that will require ongoing treatment and may affect my availability” is legally sufficient.

What you’re entitled to is reasonable accommodation. That means your employer is required to adjust your working conditions to help you continue doing your job, up to the point of what’s called “undue hardship.” In practice, this includes things like flexible start times, reduced hours, modified duties, or a phased schedule around treatment days.

Who to talk to first

Think carefully before deciding whether to start with HR or your direct manager. HR conversations are more formal and documented. A manager’s conversation may be warmer but less protected. In most cases, getting something in writing afterward (even just a summary email “Thanks for our conversation today, just confirming we agreed to…”) helps to protect you. If your employer has an Employee Assistance Program, use it. That counsellor operates in confidence and can help you think through the disclosure conversation before you have it.

How Do You Tell Your Boss You Have Cancer?

This is the conversation most people dread most. Here’s how to approach it.

Deciding what to share

You don’t owe your employer a medical history. What you need to communicate is what’s happening, how it will affect your work, and what you’re asking for. You can say you have a medical condition requiring treatment without naming cancer. If you choose to name it, you control how much detail follows.

Before you have the conversation, think about how information travels in your workplace. Who will you want to tell directly, and in what order? If your manager is likely to tell the whole team before you’re ready, factor that in.

A framework for the conversation

Opening: “I wanted to come to you directly because I think it’s important we work through this together.”

Factual summary: Name what you know about the treatment timeline and how it’s likely to affect your schedule. Be specific where you can. “I’ll have appointments on Tuesday mornings for approximately three months” is more useful than “I’m not sure how this will affect things yet.”

What you need: State your ask upfront rather than building to it. “I’d like to discuss a temporary adjustment to my hours” or “I’d like to understand what leave options are available to me.”

Reassurance: Tell them how you plan to manage your commitments. If you have a plan, share it. If you don’t yet, say you’ll put one together within the week.

After the conversation

Send a brief follow-up email the same day summarising what was discussed and what was agreed. This protects you and creates a record without being adversarial. Set an expectation for when you’ll next check in, and know that how your colleagues react to the news is not your responsibility to manage.

Managing Cancer Treatment and Work at the Same Time

Work and identity. For many people, work is not just income. It’s tied to how they see themselves. Losing the ability to work, even temporarily, can feel like losing part of who you are. If keeping some connection to work helps you feel like more than a cancer patient, that’s a completely legitimate reason to try. Work gives some people structure, purpose, and a place where the illness doesn’t define every conversation. At the same time, if you’re using work to avoid processing what’s happening, that’s worth being honest about. There’s no right answer here. What matters is that the decision is yours, made deliberately, not by default.

Energy management. Treatment fatigue is real and cumulative. It can often get harder as treatment progresses. If you’re working through chemotherapy or radiation, schedule your highest-priority tasks in the hours when you have the most energy, and protect your recovery time after infusion or treatment days. Don’t assume you’ll bounce back the same afternoon. If you want to arrange treatment appointments around work, tell your oncology team. It’s a common request and they can often accommodate it, within the constraints of the treatment schedule.

Staying in contact while on leave. If you take time away from work, don’t disappear entirely. A brief check-in message every couple of weeks keeps the relationship warm and means colleagues are still thinking of you when you return. Designate one trusted colleague to keep you loosely in the loop so you’re not blindsided when you come back. People who stay vaguely connected during leave consistently find their return easier, both socially and practically.

When you can’t keep up. Communicate early. “I need to shift the timeline on this” is a much easier conversation before a deadline than after one. Identify one person who can be your backup when capacity is low, and agree upfront on how that handoff works. You don’t need to explain yourself beyond what’s necessary.

Childcare and household logistics

For parents, the second job at home is often a bigger strain on work than the illness itself. Exhaustion after a treatment day isn’t just physical. If you’re arriving at work already depleted because the morning was chaotic or you were up with the kids, that’s where things can start to unravel.

Carmen, one of the parents in Nankind’s program, put it plainly: “Once it came time for radiation, I thought, What am I going to do about childcare? Which is every day, and they sent me a Volunteer Angel. Denise was absolutely fabulous!”

Nankind’s Volunteer Angels visit your home weekly, free of charge, to care for your children while you rest or attend appointments. For parents trying to stay employed during treatment, having that support in place is often what makes the difference between managing and burning out.

The mental load

Carrying a secret at work is exhausting. So is being the person everyone is treating carefully, watching for signs of struggle, or avoiding certain topics. At some point, you may need somewhere you can be honest without managing how you’re received.

Nankind’s free Mom Support Group and Psychosocial Support Specialists offer exactly that space, a place where you don’t have to perform strength for anyone. Get in touch with Nankind if you want to know more.

Leave Options in Canada

Employment Insurance Sickness Benefits. If you need to stop working, EI Sickness Benefits provide up to 26 weeks of income replacement. To qualify you need 600 insurable hours worked in the past 52 weeks and a medical certificate from your doctor. Apply as early as possible. There is a one-week waiting period before benefits begin, and the application process takes time. Don’t wait until you’ve exhausted your sick days to start.

Short-term and long-term disability. Check your employee benefits booklet for your employer’s short-term and long-term disability coverage. Look at the waiting periods, coverage percentages, and what documentation is required. If you have individual disability insurance outside your employer plan, contact that insurer as well. The claims process takes longer than most people expect, so starting early matters.

Long-term leave and job protection. In Ontario, the Employment Standards Act provides job-protected medical leave. This means your employer cannot terminate your position while you are on approved medical leave. Federal employees have equivalent protections under the Canada Labour Code. Your job can be there when you’re ready to come back.

What if you can’t return to work at all? This is a conversation most guides skip. Some people complete treatment and find that returning to their previous job is simply not possible, whether due to physical limitations, changes in cognition, or a shift in what they need from their life. This is more common than people expect, and it deserves a direct, honest discussion rather than avoidance. Canada Pension Plan (CPP) Disability Benefits are available to Canadians whose disability prevents them from working at any job on a regular basis, and cancer can qualify. Your hospital’s social worker can help you understand your eligibility and navigate the application. Losing work is a real loss, not just a financial one. Giving yourself permission to grieve is not weakness, it’s part of the process in your journey. 

Coming Back to Work After Cancer Treatment

There is no right time. Some people return to work during treatment. Others wait until it ends and some wait longer, all of these are valid. Pay attention to your energy and your readiness, not to a calendar or to what someone else managed.

Planning a phased return. A phased return allows you to rebuild your hours and workload gradually rather than returning to full capacity on day one. Work with your healthcare team and your HR department to set realistic parameters. If your employer has an occupational health resource, use them. Protect your schedule in the early weeks, and don’t let the relief of returning tip into overcommitting.

What’s changed, and that’s okay. Cancer changes priorities and your relationship with your work may be different when you return, and that’s allowed. Some people come back with renewed focus and energy for their work. Others find they no longer find it meaningful in the same way. Both are legitimate outcomes of a significant experience. This is a reasonable time to reassess, not a failure to bounce back.

Frequently Asked Questions

Do I have to tell my employer I have cancer? No. In Canada, disclosure is only required if you’re requesting accommodation, such as adjusted hours or medical leave. Even then, you don’t have to name your diagnosis, a general statement about a medical condition is legally sufficient.

What accommodations am I entitled to at work during cancer treatment? Employers in Canada are required to provide reasonable accommodation up to the point of “undue hardship.” This can include flexible start times, reduced hours, modified duties, or a schedule built around treatment days.

What leave options are available to Canadians with cancer? Options include Employment Insurance Sickness Benefits (up to 26 weeks of income replacement), employer-provided short- and long-term disability coverage, and job-protected medical leave under the Ontario Employment Standards Act or the Canada Labour Code.

Can I be fired for taking medical leave for cancer treatment? No. Job-protected medical leave means your employer cannot terminate your position while you’re on approved leave, whether under provincial or federal employment standards.

How does Nankind support working parents going through cancer treatment? Nankind provides free, in-home childcare through trained Volunteer Angels, along with a free Mom Support Group and access to free counselling with Psychosocial Support Specialists. All of this support is designed to ease the load at home so parents have more capacity to manage their treatment, work and parenting. 

You Don’t Have to Do This Part Alone Either

Navigating work during cancer is one of the hardest parts of the whole experience, not because it’s the most medically serious, but because it’s the most relentless. The bills don’t pause. The expectations don’t pause. And nobody around you fully understands what it costs to keep showing up.

If taking some of the pressure off at home would help you manage the pressure at work, Nankind is here, and every program is free. Our network of Volunteer Angels is professionally screened and trained. Register for support today.

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